Differential Item Fu ...
Steven J. Oster ...
Our Price: £ 46.48
Fundamentals of Item ...
Ronald K. Hambl ...
Our Price: £ 91.47
Introduction to Nonp ...
K. Sijtsma, Kla ...
Our Price: £ 136.36
Polytomous Item Resp ...
Remo Ostini, Mi ...
Our Price: £ 37.16
Methods of Meta-Anal ...
John E. Hunter, ...
Our Price: £ 166.49